CWB Welding Inspection Level II -
Chapter 1 Welding Processes and
Equipment
_______ is commonplace weld illness that could arise whilst using high modern-day DCEP
polarity for the SAW manner:
Slag entrapment
Solidification cracking
Undercut
Underfill - ANS-Solidification cracking
___________ is commonplace weld illness which can arise when the use of high modern-day
DCEP polarity for the SAW process.
A. Undercut
b. Underfill
c. Slag entrapment
d. Solidification cracking - ANS-d. Solidification cracking
A downside of the usage of DCEN as compared to DCEP with the SAW technique is: (Multiple
Choice)
A) greater distortion.
B) extra solidification cracking.
C) susceptibility to incomplete penetration.
D) greater slag inclusions. - ANS-C) susceptibility to incomplete penetration.
A cord precise with the aid of CSA Standard W48 as an E491T-9MJ-H8: (Multiple Choice)
A) results in a weld deposit with a most of eight ml of diffusible hydrogen per one hundred g of
weld metal.
B) has a yield energy of 550 MPa.
C) is confined to welding in the flat and horizontal positions.
D) does not meet the necessities for stepped forward sturdiness of 27J at -40 °C. - ANS-A)
results in a weld deposit with a most of eight ml of diffusible hydrogen in keeping with a hundred
g of weld metallic.
An arc plasma includes
a. Atoms and fuel molecules.
,B. Free electrons and effective ions.
C. Carbon atoms and hydrogen molecules.
D. Light of a set wavelength - ANS-b. Unfastened electrons and effective ions.
An arc plasma consists of ___________________________.
Loose electrons and tremendous ions.
Carbon atoms and hydrogen molecules.
Atoms and gas molecules.
Light of a fixed wavelength - ANS-loose electrons and positive ions
Can the GMAW procedure use a steady voltage electricity source in addition to a constant
cutting-edge electricity supply? (Multiple Choice)
A) sure
B) no - ANS-B) no
Compared with the FCAW method the MCAW procedure has the subsequent capabilities.
A. Higher deposition charges for the equal electrode size and modern
b. Typically handiest used in the flat and horizontal function
c. Higher productivity due to the fact there is only islanding slag produced
d. All of the above - ANS-d. All of the above
Diffusion welding is: (Multiple Choice)
A) a fusion welding system.
B) a high density fusion process that produces coalescence among substances via the warmth
generated from a focused beam of excessive velocity electrons.
C) the use of frictional heat generated by means of the motion of two substances, in contact
beneath compressive forces, to form a solid kingdom metallurgical bond.
D) a solid kingdom welding system that produces an atomic bond between surfaces thru the
utility of warmth and stress. - ANS-D) a solid kingdom welding method that produces an atomic
bond between two surfaces thru the software of warmth and pressure.
Do fluxes used for soldering replace pre-cleansing? (Multiple Choice)
A) Yes
B) No - ANS-B) No
Electrodes for flux cored arc welding: (Multiple Choice)
A) can be self shielded or gas shielded.
B) can only be self shielded.
C) can simplest be fuel shielded.
, D) can most effective be a strong electrode. - ANS-A) can be self shielded or fuel shielded.
Explosion welding is: (Multiple Choice)
A) a stable country welding manner that produces an atomic bond between two surfaces thru
the utility of warmth and stress.
B) a solid kingdom technique in which coalescence is produced thru high pace impacting of two
or extra substances through managed detonation.
C) a method where the heat generated in a chemical reaction is used to enroll in fabric without
or with the application of pressure.
D) a method that utilizes a beam of coherent optical mild centered to create a small spot of
excessive warmth and is appropriate for welding metal and non-steel materials. - ANS-B) a solid
nation method wherein coalescence is produced through excessive pace impacting of or more
materials by controlled detonation.
Fluxes that appreciably have an effect on the weld steel composition are termed: (Multiple
Choice)
A) active fluxes.
B) acidic fluxes.
C) impartial fluxes.
D) fundamental fluxes. - ANS-A) active fluxes
For the SAW process the wires and fluxes may be decided on to
a. Obtain excessive deposition quotes
b. Reap excessive travel speeds
c. Acquire particular mechanical houses
d. All the above - ANS-d. All of the above
Friction welding is accomplished through: (Multiple Choice)
A) the relative movement of the components with low strain touch.
B) the usage of a spinning friction disc to generate heat.
C) the relative rotational movement of the components to be able to produce disillusioned.
D) an extended manner of relative movement. - ANS-C) the relative rotational movement of the
parts with a purpose to produce upset.
Gas tungsten arc welding may be used with: (Multiple Choice)
A) alternating and direct present day of both polarity.
B) alternating modern handiest.
C) direct contemporary electrode nice only.
D) direct cutting-edge electrode negative best. - ANS-A) alternating and direct cutting-edge of
both polarity.
Chapter 1 Welding Processes and
Equipment
_______ is commonplace weld illness that could arise whilst using high modern-day DCEP
polarity for the SAW manner:
Slag entrapment
Solidification cracking
Undercut
Underfill - ANS-Solidification cracking
___________ is commonplace weld illness which can arise when the use of high modern-day
DCEP polarity for the SAW process.
A. Undercut
b. Underfill
c. Slag entrapment
d. Solidification cracking - ANS-d. Solidification cracking
A downside of the usage of DCEN as compared to DCEP with the SAW technique is: (Multiple
Choice)
A) greater distortion.
B) extra solidification cracking.
C) susceptibility to incomplete penetration.
D) greater slag inclusions. - ANS-C) susceptibility to incomplete penetration.
A cord precise with the aid of CSA Standard W48 as an E491T-9MJ-H8: (Multiple Choice)
A) results in a weld deposit with a most of eight ml of diffusible hydrogen per one hundred g of
weld metal.
B) has a yield energy of 550 MPa.
C) is confined to welding in the flat and horizontal positions.
D) does not meet the necessities for stepped forward sturdiness of 27J at -40 °C. - ANS-A)
results in a weld deposit with a most of eight ml of diffusible hydrogen in keeping with a hundred
g of weld metallic.
An arc plasma includes
a. Atoms and fuel molecules.
,B. Free electrons and effective ions.
C. Carbon atoms and hydrogen molecules.
D. Light of a set wavelength - ANS-b. Unfastened electrons and effective ions.
An arc plasma consists of ___________________________.
Loose electrons and tremendous ions.
Carbon atoms and hydrogen molecules.
Atoms and gas molecules.
Light of a fixed wavelength - ANS-loose electrons and positive ions
Can the GMAW procedure use a steady voltage electricity source in addition to a constant
cutting-edge electricity supply? (Multiple Choice)
A) sure
B) no - ANS-B) no
Compared with the FCAW method the MCAW procedure has the subsequent capabilities.
A. Higher deposition charges for the equal electrode size and modern
b. Typically handiest used in the flat and horizontal function
c. Higher productivity due to the fact there is only islanding slag produced
d. All of the above - ANS-d. All of the above
Diffusion welding is: (Multiple Choice)
A) a fusion welding system.
B) a high density fusion process that produces coalescence among substances via the warmth
generated from a focused beam of excessive velocity electrons.
C) the use of frictional heat generated by means of the motion of two substances, in contact
beneath compressive forces, to form a solid kingdom metallurgical bond.
D) a solid kingdom welding system that produces an atomic bond between surfaces thru the
utility of warmth and stress. - ANS-D) a solid kingdom welding method that produces an atomic
bond between two surfaces thru the software of warmth and pressure.
Do fluxes used for soldering replace pre-cleansing? (Multiple Choice)
A) Yes
B) No - ANS-B) No
Electrodes for flux cored arc welding: (Multiple Choice)
A) can be self shielded or gas shielded.
B) can only be self shielded.
C) can simplest be fuel shielded.
, D) can most effective be a strong electrode. - ANS-A) can be self shielded or fuel shielded.
Explosion welding is: (Multiple Choice)
A) a stable country welding manner that produces an atomic bond between two surfaces thru
the utility of warmth and stress.
B) a solid kingdom technique in which coalescence is produced thru high pace impacting of two
or extra substances through managed detonation.
C) a method where the heat generated in a chemical reaction is used to enroll in fabric without
or with the application of pressure.
D) a method that utilizes a beam of coherent optical mild centered to create a small spot of
excessive warmth and is appropriate for welding metal and non-steel materials. - ANS-B) a solid
nation method wherein coalescence is produced through excessive pace impacting of or more
materials by controlled detonation.
Fluxes that appreciably have an effect on the weld steel composition are termed: (Multiple
Choice)
A) active fluxes.
B) acidic fluxes.
C) impartial fluxes.
D) fundamental fluxes. - ANS-A) active fluxes
For the SAW process the wires and fluxes may be decided on to
a. Obtain excessive deposition quotes
b. Reap excessive travel speeds
c. Acquire particular mechanical houses
d. All the above - ANS-d. All of the above
Friction welding is accomplished through: (Multiple Choice)
A) the relative movement of the components with low strain touch.
B) the usage of a spinning friction disc to generate heat.
C) the relative rotational movement of the components to be able to produce disillusioned.
D) an extended manner of relative movement. - ANS-C) the relative rotational movement of the
parts with a purpose to produce upset.
Gas tungsten arc welding may be used with: (Multiple Choice)
A) alternating and direct present day of both polarity.
B) alternating modern handiest.
C) direct contemporary electrode nice only.
D) direct cutting-edge electrode negative best. - ANS-A) alternating and direct cutting-edge of
both polarity.
